Method and system for producing a fuel cell

Abstract

Method for producing a fuel cell (100) having elements (1) arranged in layers (2), in which i. a receiving device (10) for receiving a plurality of stacked layers (2) of a fuel cell (100) and a pressing device (50) for exerting a pressing force (F) on the stacked layers (2) by performing a defined pressing movement (54) are provided, ii. several layers (2) are stacked in the receiving device (10), iii. after stacking, a relative movement (40) is carried out between the stack (6) produced in the receiving device (10) and the pressing device (50), so that the pressing device (50) can be brought into operative connection with the stack (6), wherein the relative movement (40) is a different movement than the defined pressing movement (54), iv. pressing the stack (6) by means of the pressing device (50), characterized in that after the layers (2) have been stacked, the stack (6) produced is removed from the receiving device (10) and a pressing device (50) is fed to the stack (6).

Description

[0001] The present invention relates to a method for producing a fuel cell comprising elements arranged in layers. Furthermore, the present invention relates to a system for producing a fuel cell and for implementing the method according to the invention.

[0002] In order to reduce environmental pollution, it is necessary to reduce or even eliminate environmentally harmful emissions in many technical areas. This also applies to the automotive sector, for which increasingly strict restrictions are being defined regarding permissible fuel consumption and emissions. One alternative to meeting these requirements is to equip vehicles with electric drives. In addition to equipping a vehicle with an electrochemical battery that provides the necessary propulsion energy, the use of fuel cells also promises to provide an environmentally friendly vehicle at a relatively affordable price.

[0003] However, fuel cells that feature bipolar plates and membrane electrode assemblies in layers can currently only be produced with a relatively high expenditure of personnel and / or production resources, as all assembly steps require a very high level of effort in terms of keeping the individual fuel cell elements and the production resources clean, as well as a high degree of positioning accuracy. This high level of effort is necessary in particular to prevent the formation of leaks that could arise if the sealing elements in the so-called "stack" of the fuel cell slip. Since the manufacturing process of a fuel cell includes the manufacturing steps of stacking the individual elements and then pressing these elements, a manufacturing method has been established in which the individual fuel cell elements are stacked in a stationary press.This allows the pressing process to be carried out on the manufactured stack immediately after its completion without having to move the stack, thus reducing the risk of individual fuel cell elements slipping and / or contamination.

[0004] Manufacturing methods in which a stacking process and subsequent pressing of the produced stack are carried out are also known from other areas, such as the production of batteries. WO 2012 / 000679A1 discloses a method for stacking sheets, in particular for producing a lithium-ion battery. The stack of sheets produced according to the teachings of this document, which serves to form part of a lithium-ion battery, is subjected to a pressing force generated by a hold-down device. However, this pressing force serves only to fix the stacked layers and not, as is required in the production of fuel cells, to exert such a pressing pressure that the produced stack is reduced in its extension along the direction of the pressing force, thereby achieving a sealing effect.In addition, the pressing process takes place here during the stacking process, namely after each layer has been applied.

[0005] Documents US 8,247,137 B2 and DE 10 2013 225 034 A1, among others, disclose different teachings regarding the production of a fuel cell. US patent 8,247,137 B2 teaches that a stacking process takes place in a holding device, followed by a pressing process at elevated temperature. This permanently fixes the individual layers of the fuel cell to one another. The pressing device is permanently attached to the holding device.

[0006] DE 10 2013 225 034 A1 discloses a device for manufacturing fuel cell components. After performing a stacking process, the elements stacked together are then pressed together and the individual layers are bonded under pressure. The stacking process takes place in the press itself.

[0007] DE 11 2010 006 034 T5 discloses a method for manufacturing a fuel cell, comprising the steps of: (a) providing a stack reference unit that is expandable and contractable in a stacking direction; (b) arranging the stack reference unit to extend through a first opening of a housing main body such that, in the expanded state of the stack reference unit, one end of the stack reference unit is positioned inside the housing main body and the other end of the stack reference unit is positioned outside the housing main body; (c) applying, after step (b), a plurality of cells to the stack reference unit such that the plurality of cells are arranged in a direction from the inside to the outside of the housing main body;(d) contracting the stack reference unit and compressing the cell stack mounted on the stack reference unit in the stacking direction to accommodate the stack reference unit and the cell stack within the casing main body of the fuel cell; and (e) attaching, after step (d), an end wall member to a first wall member to close the first opening so that the force applied to the cell stack in the stacking direction is maintained.

[0008] US 2008 / 120829 A1 teaches a method for manufacturing a fuel cell by stacking a large number of layers of fuel cell units. A first support plate is placed at the front portion of a pusher unit in a slightly inclined, upward position, and then a large number of layers of fuel cell units are stacked on the first support plate. Subsequently, the pusher unit is placed in a horizontal position, and the stacked fuel cell units are vibrated for alignment. A second support plate is provided on the front end surface of the aligned fuel cell unit. The first and second support plates are connected using connecting plates, while a predetermined compressive force is applied to the fuel cell unit by the first support plate and the second support plate.

[0009] US 2006 / 127732 A1 discloses a fuel cell stacking device for conveying stacking elements to form a fuel cell stack and stacking them in a prescribed order. It includes a conveying robot, a stacking robot, a guide rail that allows each robot to move along a prescribed route to the stacking position, a unit for detecting the sides and / or tips of the stacking elements, and a unit for aligning the positions of the stacking elements based on the detected information. US 2006 / 127732 A1 also discloses a corresponding method for stacking fuel cells.

[0010] The invention is based on the object of providing a method and a system for producing a fuel cell, with which fuel cells or at least modules thereof can be manufactured in a simple, reliable, quality-assured and cost-effective manner.

[0011] This object is achieved by the inventive method for producing a fuel cell according to claim 1 and by the inventive system for producing a fuel cell by implementing the inventive method for producing a fuel cell according to claim 5. Advantageous embodiments of the inventive method are specified in subclaims 2 to 4. Advantageous embodiments of the inventive system are specified in subclaims 6 to 8.

[0012] The process according to the invention is used to produce a fuel cell comprising elements arranged in layers. The process is carried out using the following steps: 1. a receiving device for receiving several stacked layers of a fuel cell and a pressing device for exerting a pressing pressure on the stacked layers by performing a defined pressing movement are provided, 2. several layers are stacked in the receiving device, 3. after stacking, a relative movement is carried out between the stack produced in the receiving device and the pressing device, so that the pressing device can be brought into operative connection with the stack, wherein the relative movement is a different movement than the defined pressing movement, 4. the stack is pressed using the pressing device.

[0013] After the layers have been stacked, the resulting stack is removed from the receiving device, and a pressing device is fed to the stack. This means that the relative movement is carried out in such a way that the pressing device is moved toward the stack.

[0014] The elements to be stacked according to the invention, which form the layers, are, for example, bipolar plates and membrane electrode assemblies.

[0015] During stacking of the layers, the pressing device is not in use on the stacked or to-be-stacked layers. Instead, during this phase, the pressing device is used or can be used to press another stack. Preferably, the stacking process does not take place in or on the pressing device, which is intended for exerting the pressing pressure on the stacked layers, but rather in a dedicated receiving device, or so-called stacking cell, set up especially for this purpose, in particular separately from the pressing device, in which the layers of the fuel cell are preferably stacked one on top of the other. This stacking process can be performed by a robot.

[0016] The defined pressing movement is characterized by a start when the stack is contacted by force introduction elements of the pressing device at force introduction points and by an end when a defined stack dimension is reached parallel to the line of action of the pressing force.

[0017] According to the invention, a pressing device which is essentially independent with regard to its position or a stack which is essentially independent with regard to its position makes it possible to bring the pressing device into operative connection with the stacks outside the effective range of the receiving devices.

[0018] As a result, a large number of stacking processes can be carried out simultaneously and without spatial restrictions, whereby far fewer pressing devices than receiving devices are required in order to be able to carry out all process steps one after the other, since one pressing device can successively press several stacks stacked in different receiving devices.

[0019] This means that after the stacking process in the receiving device has been completed, the stack is decoupled from the receiving device and pressed by a pressing device, whereby the pressing device is fed to the stack as a relative movement.

[0020] In a further alternative embodiment of the method, the receiving device is formed by a gripping device that can be connected to a pressing device, wherein energy can be transferred from the pressing device to the gripping device for the purpose of gripping and / or pressing the stack. The stacking process is thus carried out in the gripping device.

[0021] The advantage of the aforementioned designs lies in the fact that, during the relatively long stacking period, the pressing devices required to press the produced stack are available elsewhere and are not blocked. This makes it possible to carry out the stacking process on or in several receiving devices and to feed them sequentially to one or more pressing devices, whereby significantly more stacking processes can be carried out in or on receiving devices than pressing devices are used. This allows for a significant reduction in investment in manufacturing equipment.

[0022] In a particular embodiment of the method, the stack is transported at least intermittently during the pressing process by means of the pressing device. This means that if the pressing device is equipped with a transport device or if the pressing device is mechanically coupled to a transport device, the stack held in or on the transport device can be pressed and transported simultaneously. This can be achieved, for example, by a suitable gripper that can exert a corresponding pressing pressure on the stack and that is mechanically coupled to a robot designed to apply the pressing force and the required transport energy. This allows further production time to be saved.The transport process can in particular take place to a work station where the stack is provided with belts which fix at least one geometric dimension of the stack after the pressing process has been carried out.

[0023] The method according to the invention can be advantageously designed in that before and / or during a movement of the pressing device with the stack received therein or thereon, before exerting a pressing action to achieve a defined dimension of the pressed stack along the pressing direction, which corresponds to the final dimension of the stack or also a dimension enabling further assembly, such as banding, a pre-pressing of the stack takes place, wherein the force Fv applied during the pre-pressing is in a ratio of Fv / Fe = 0.1 ... 0.3 to the force Fe to be applied to achieve the final dimension.

[0024] This pre-pressing is carried out to prevent buckling of the stack before the actual pressing process, in which the stack is brought to its final dimension or to the dimension required for further battery cell assembly, and in particular during the transport process and the inertial forces acting during transport, is carried out.

[0025] In addition to the steps mentioned, the method can be carried out in such a way that during the pressing process or after the pressing process the stack is fixed in its dimension along the line of action of the pressing force, in particular by wrapping the stack with at least one band and preferably a plurality of bands. The mentioned dimension is the dimension to be measured along the axis running perpendicular to the layers of the stack. The banding ensures that the shape and size of the stack created by the pressing process is essentially and preferably completely retained and slipping of the pressed units is not possible. The ends of the bands are welded, in particular laser welded, to create loops. This process can also take place in the gripping device if necessary.

[0026] To achieve the object, a system for producing a fuel cell is also provided, which comprises a receiving device for receiving a plurality of stacked layers of a fuel cell and a pressing device for exerting a pressing pressure on the stacked layers by carrying out a defined pressing movement.The receiving device and the pressing device are designed in such a way that a plurality of layers can be stacked in the receiving device and, after a stacking process has been carried out, a relative movement can be carried out between the receiving device and the pressing device so that the pressing device can be brought into operative connection with the stack, wherein the relative movement is a different movement than the defined pressing movement, and pressing of the stack can be carried out by means of the pressing device, wherein the system for producing a fuel cell is designed to remove the produced stack from the receiving device after the layers have been stacked and to feed a pressing device to the stack.

[0027] The system is thus designed to carry out the method according to the invention. As long as the stack produced is still in the receiving device when the relative movement is performed, the relative movement between the receiving device and the pressing device is carried out, whereby the pressing device can move toward the stack or toward the receiving device.

[0028] This means that the pressing device of the system according to the invention for producing a fuel cell can simultaneously carry out a pressing process on layers other than those arranged in the said receiving device during the stacking process.

[0029] The pressing device can have a gripping device which comprises at least two gripping elements with which essentially opposing forces can be applied to stacked layers of a fuel cell in order to exert a pressing pressure on these layers.

[0030] This gripping device is preferably designed to be mechanically connected to a transport device, such as a swivel robot, and thus pivoted or transported by it, possibly while performing the pressing process. The gripping device can also be designed to allow the stacking process to take place within it. In this case, it serves as a receiving device.

[0031] The gripping device or the pressing device can have a force measuring device, a position measuring device and a control and / or regulating unit with which the pressing process can be force and / or position controlled in order to ensure optimal pressing of the stack.

[0032] At least one gripping element of the gripping device can have a plurality of prongs, in the space or spaces between which bands can be positioned for banding the stack produced.

[0033] Such a gripping element can be a so-called comb gripper, which has prongs that form free spaces between them in which bands for banding the fuel cell can be positioned.

[0034] Furthermore, the system according to the invention can comprise a transport device with which the produced stack can be moved. Preferably, the transport device should be designed such that it simultaneously forms the pressing device or is mechanically connected to it, so that the stack pressed by the pressing device can be transported simultaneously.

[0035] The invention is explained below with reference to the embodiments shown in the accompanying drawings.

[0036] It shows Fig. 1: a system according to the invention for producing a fuel cell, Fig. 2: a manufactured stack before pressing, Fig. 3: a stack produced after pressing, Fig. 4a: a gripping device in side view, Fig. 4b: the Fig. 4a shown gripping device in front view, Fig. 4c: the view AA from Fig. 4b in plan view, showing a second gripping element of the gripping device, Fig. 5: a compressed stack before banding, Fig. 6: a compressed stack after banding.

[0037] First, the Fig. 1 for producing a fuel cell will be discussed in order to explain the method according to the invention for producing a fuel cell by explaining its components. This system comprises a plurality of receiving devices 10 in which individual elements of the fuel cell to be produced can be stacked manually or automatically. Thus, a layered stack is created on or in each receiving device 10 shown. The system according to the invention further comprises a pressing device 50, which in the embodiment shown here also has a transport robot 41. This transport robot 41 is designed such that a gripping device 60 arranged on it is movable, namely in the relative movements 40 from and to the receiving devices 10.In the embodiment variant shown here, the pressing device 50 thus comprises a gripping device 60 designed for the positive and / or non-positive gripping of a stack produced in a receiving device 10, as well as a transport robot 41, with which the gripping device 60 can be moved with the stack received therein, namely at least in the relative movements 40 from and to the receiving devices 10. The method according to the invention can therefore be carried out in such a way that stacks of the elements of the fuel cells to be produced are produced on or in the receiving devices 10 and then, by means of the transport robot 41, the gripping device 60 is brought into engagement with a respective stack 6 in such a way that this stack 6 is gripped and pressed by the gripping device 60.

[0038] This means that after stacking, the stack 6 produced is picked up, fixed and pressed directly with the gripping device 60, so that slipping of seals or individual elements 1 of the stack 6 due to transport or the penetration of foreign particles and the associated leaks can be avoided.

[0039] After the pressing process has been carried out or even simultaneously with the pressing process, the stack 6 held in the gripping device 60 can be moved or transported by means of the transport robot 41, for example to one of the workstations 11 shown, in particular to the laser welding 17, in which the ends of bands placed around the pressed stack are welded together in order to permanently exert pressure on the layered elements and thereby fix the elements to one another and create the desired tightness between the elements.

[0040] This means that, in contrast to the previously customary methods, the stacking process and the pressing process do not take place in one device, such as the receiving device, but the pressing process is carried out separately from the stacking process, whereby in order to save production times, the pressing process can be combined at least partially at the same time with the transport process of the produced stack from a receiving device 10 to one of the further workstations 11.

[0041] This enables simultaneous stacking in a plurality of receiving devices 10 as well as serial pressing and, if necessary, transporting of the stacks produced by means of the pressing device 50, so that only a small number of pressing devices 50 need be kept available for a large number of receiving devices 10, wherein, in view of the usually long time required to carry out the stacking process and the relatively short pressing time required, even a single pressing device 50 is sufficient to operate a plurality of receiving devices 10.

[0042] Alternatively to the Fig. According to the procedure described in section 1, the stacking process can take place in a gripping device that is, however, decoupled or decoupleable from a transport device. This means that in this embodiment of the method, the gripping device forms a receiving device or represents a part of it. After the stacking process has been carried out, the gripping device can be coupled to the actual pressing device, which transfers the force or energy required to carry out the pressing process to the gripping device. If necessary, as already described, a transport process of the stack in the gripping device can also take place at least partially simultaneously with the pressing process.The method according to the invention is also implemented here in that only one pressing device is used for the serial pressing of stacks, whereby the stacks are not produced in receiving devices that only serve to receive the elements, but in several gripping devices, which are then in turn brought into operative connection with a pressing device one after the other.

[0043] The transport robot 41 can be designed as a flexible transport device such that it also implements the material flow to and from the other workstations 11. For example, it can feed the individual elements, which are later to be stacked in the receiving devices 10, to the pre-assembly workstation 11 and from this pre-assembly 12 to the receiving devices 10. After the stacking process has been carried out in the receiving devices 10, the stack created there can be fed in the manner described to workstation 11, where the laser welding 17 of the strip ends is performed. From there, the manufactured fuel cell can in turn be fed to workstation 11, where a leak test 14, electronics assembly 15, and electronics testing 16 take place. From this workstation, the fuel cell can in turn be fed to workstation 11 of the final assembly 13.At the aforementioned workstations 11, operators 20 shown can carry out the respective operations, and / or automated production systems not shown here can carry out the respective processes or even support the operators 20 in doing so.

[0044] Thus, the welding robot 30 shown can be used for laser welding 17, which, as will be explained with reference to the Fig. 5 and Fig. 6 will be explained, the ends of bands wrapping around the fuel cell are welded together.

[0045] In the Fig. 2 and Fig. Figure 3 shows the actual pressing process. Fig. Figure 2 shows a manufactured stack 6 prior to pressing. It can be seen that this stack 6 comprises several elements 1 that are essentially aligned horizontally and each form individual layers 2. End plates 3 are arranged parallel to these layers 2 and at the end of the resulting stack 6.

[0046] After the stacking process and before the pressing process, the stack 6 produced has an initial dimension 4 defined perpendicular to the layers. After applying a pressing force F, this dimension decreases, as can be seen from Fig. 3. The individual layers 2 of the stack 6 are pressed together in such a way that a defined stack dimension 5 is formed, which essentially corresponds to the final dimension of the fuel cell in this direction.

[0047] The line of action 51 of the pressing force F runs essentially perpendicular to the individual layers 2 and, for the sake of simplicity, is introduced at the force introduction points 53 via force introduction elements of a gripping device (not shown here). Of course, instead of the point load realized by the pressing force F shown here, a line or area load can also be exerted on the end plates 3. The force introduction elements 52 preferably have a very low parallelism tolerance in order to apply the pressing pressure very evenly to the individual layers of the stack to be produced.

[0048] To grip and also to carry out the described pressing process, the Fig. 4a and Fig. 4b is provided. In the embodiment shown here, this comprises a base plate 63 and a first gripping element 64 arranged thereon so as to be displaceable via one or more linear guides 68, as well as a fixed second gripping element 65. The first gripping element 64 and the second gripping element 65 each comprise force introduction elements 52 which are aligned essentially plane-parallel to one another and are designed to Fig. 2 and Fig. 3 to exert the pressing force F on the stack 6. For this purpose, the gripping device 60 comprises a preferably electrically implemented drive device 61, which advantageously comprises a displacement measuring system 69 and / or a force measuring system (not shown here). With this drive device, the first gripping element 64 can be moved in a pressing movement 54 in the direction of the second gripping element 65, so that a stack (not shown here) can be held between the first gripping element 64 and the second gripping element 65 in the Fig. 2 and Fig. 3 can be subjected to the pressing force.

[0049] The gripping device 60 has a connecting device 62 which makes it possible to connect the gripping device 60 to the Fig. 1 in the form of the transport robot shown there, in order to be able to be moved or transported by this transport robot 41, in particular when a stack is picked up by the gripping device 60.

[0050] The second gripping element 65 arranged here in the lower area of ​​the gripping device 60 has a plurality of prongs 66, as can be seen in particular from Fig. 4c, in which the view AA from Fig. 4b. Between the prongs 66, gaps 67 are formed, which allow the simple positioning of bands between the prongs 66, which bands are required for the permanent application of pressure to the layered elements 1 of the stack 6.

[0051] For the purpose of guiding such belts around a stack received in the gripping device 60, the base plate 63 can also have free spaces (not shown here) in which or through which the belts can be guided; or spacing elements (not shown here) can be arranged to ensure that a stack received in the gripping device 60 has a sufficient distance from the base plate 63 so that belts can also be positioned here. Furthermore, the first gripping element 64 can also be designed with such prongs 66 and spaces 67 to facilitate the positioning of belts here as well.

[0052] Preferably, a table or a support comprises a Fig. 1, on which a stack that has been created rests, has slots or recesses into which the prongs 66 of the second gripping element 65 can move, so that the stack created can be easily moved under and gripped by the second gripping element 65 or its prongs 66, without causing the risk of individual elements of the stack being displaced.

[0053] The process of arranging the bands and welding them is described in the Fig. 5 and Fig. 6. How Fig. 5, individual bands 70 are preferably guided around the stack while maintaining the pressing effect of a pressing device 50 (not shown here) on the stack, the stack being positioned in a defined manner by contact elements 80.

[0054] After joining the ends of the bands 70, they are welded 90, as shown in Fig.6, are connected to one another so that they encircle the stack 60 and consequently counteract the elastic restoring forces of the individual layers of this stack, thus exerting a constant pressing force or pressure on the stack or the individual layers. This provides the fuel cell 100 with its essential components, although the fuel cell 100 may still need to be completed with electronic components and subjected to a quality inspection. List of reference symbols 1 item 2nd layer 3 End plate 4 Initial dimension 5 defined stacking dimensions 6 stacks 10 Recording device 11 Workplace 12 Pre-assembly 13 Final assembly 14 Leak test 15 Electronics assembly 16 Electronics testing 17 Laser welding 20 operators 30 welding robots 40 Relative motion 41 transport robots 50 Pressing device F Press force 51 Line of action 52 Force introduction element 53 Force introduction point 54 Pressing movement 60 gripping device 61 Drive device 62 connection device 63 Base plate (on gripping device) 64 First gripping element 65 Second gripping element 66 prongs 67 space 68 Linear guide 69 Position measuring system 70 volumes 80 investment element 90 welding 100 fuel cells

Claims

[1] Method for manufacturing a fuel cell (100) having elements (1) arranged in layers (2), wherein i. a receiving device (10) for receiving several stacked layers (2) of a fuel cell (100) and a pressing device (50) for exerting a pressing force (F) on the stacked layers (2) by performing a defined pressing movement (54) are provided, ii. several layers (2) are stacked in the receiving device (10), iii. after stacking, a relative movement (40) is carried out between the stack (6) produced in the receiving device (10) and the pressing device (50), so that the pressing device (50) can be brought into operative contact with the stack (6), wherein the relative movement (40) is a movement other than the defined pressing movement (54), iv. pressing of the stack (6) is carried out using the pressing device (50), characterized by, that after the layers (2) have been stacked, the resulting stack (6) is removed from the receiving device (10) and a pressing device (50) is fed to the stack (6). [2] Method for manufacturing a fuel cell according to any of the preceding claims, characterized by , that during the pressing process the stack (6) is transported at least intermittently by means of the pressing device (50). [3] Method for manufacturing a fuel cell according to any of the preceding claims, characterized by, that before and / or during a movement of the pressing device (50) with a stack (6) received therein or on it, before applying pressure to achieve a defined dimension (5) of the pressed stack (6) along the pressing direction, which corresponds to the final dimension of the stack (6) or also a dimension enabling further assembly, such as strapping, a pre-pressing of the stack (6) takes place, wherein the force Fv applied during the pre-pressing is in a ratio of Fv / Fe = 0.1 ... 0.3 to the force Fe to be applied to achieve the final dimension. [4] Method for manufacturing a fuel cell according to any of the preceding claims, characterized by , that during or after the pressing process the stack (6) is fixed in its dimension along the line of action of the pressing force (51), in particular by wrapping the stack (6) with at least one band (70) and preferably several bands (70). [5] System for manufacturing a fuel cell, comprising a receiving device (10) for receiving several stacked layers (2) of a fuel cell (100) and a pressing device (50) for exerting a pressing force (F) on the stacked layers (2) by performing a defined pressing movement (54), wherein the receiving device (10) and the pressing device (50) are configured such that several layers (2) can be stacked in the receiving device (10) and, after completion of a stacking operation, a relative movement (40) between the receiving device (10) and the pressing device (50) can be performed, so that the pressing device (50) can be brought into operative contact with the stack (6), wherein the relative movement (40) is a movement other than the defined pressing movement, and pressing of the stack (6) by means of the pressing device (50) can be performed, wherein the system for manufacturing a fuel cell is configured toAfter the layers (2) have been stacked, the resulting stack (6) is removed from the receiving device (10) and a pressing device (50) is fed to the stack (6). [6] System for manufacturing a fuel cell according to claim 5, characterized by , that the pressing device (50) has a gripping device (60) comprising at least two gripping elements (64, 65) with which essentially opposing forces (F) can be applied to stacked layers (2) of a fuel cell (100) for the purpose of exerting a pressing pressure on these layers (2). [7] System for manufacturing a fuel cell according to claim 6, characterized by , that at least one gripping element (64, 65) of the gripping device (60) has several prongs (66) in the space (67) or spaces (67) in which bands (70) can be positioned for banding the produced stack (6). [8] System for manufacturing a fuel cell according to one of claims 6 and 7, characterized by , that the system includes a transport device (41) with which the generated stack (6) can be moved.

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